CytochromeSeparation ofl ancesters of plants Millions of years since divergence
ID: 269701 • Letter: C
Question
CytochromeSeparation ofl ancesters of plants Millions of years since divergence 7) The figure above shows the number of amino acid substitutions per 100 residues as a function of divergence times for three different proteins. For each statement below indicate whether it is false, true, or alternatively, if it is impossible to know given the information (15 pts) s Cytochrome C has fewer amino acids under purifying selection than Hemoglobin Cytochrome C has more amino acids under purifying selection than Fibrinopeptides Fibrinopeptides have more amino acid sites where the identity of the amino acid does not matter for protein function, than do the other proteins Tnee Hemoglobin has less amino acid sites where the identity of the amino acid matters for protein function, than do Cytochrome C Eatss Mammals and reptiles diverged from a common ancestor around 300 million yeansExplanation / Answer
1. Cytochrome C has fewer amino acids under purifying selection than Hemoglobin: Looking at the data from graph this statement stands true.
2. Cytochrome C has more amino acids under purifying selection than Fibrinopeptides: Looking at he graphdata this statement stands false.
3. Fibrinopeptides have more amino acid sites where the identity of amino acid does not matter for protein function, than do other protein: This information is impossible to derive form the graph given.
4. Hemoglobin has less amino acid sites where the identity of the amino matters for protein function than cytochrome C: This data can not be derived from the graph.
5.Mammals and reptiles diverged from a common ancestor around 300 million years ago: Looking at the graph data this statement stands true.
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